Ключевые слова: 2019, action, ao, arena, athlete, atp, australia, australian, australian open, ball, billie, center, championship, competition, court, doubles, final, game, laver, match, melbourne, national, net, open, overhead, player, players, practice, prize, professional, racket, rod, rod laver, roy emerson, serve, set, singles, slam, sport, sports, stadium, tennis, title, tournament, training, volley,